/**
 * UGENE - Integrated Bioinformatics Tools.
 * Copyright (C) 2008-2020 UniPro <ugene@unipro.ru>
 * http://ugene.net
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#ifndef _U2_GL_FRAME_MANAGER_H_
#define _U2_GL_FRAME_MANAGER_H_

#include <QGLWidget>
#include <QVariantList>

#include <U2Core/Matrix44.h>
#include <U2Core/Vector3D.h>

namespace U2 {

class Vector3D;

/*!
* @brief Class for OpenGL 3d scene manipulation
*/
class GLFrame {
    static const GLfloat DEFAULT_ZOOM;
    //static const Vector3D DEFAULT_CAMERA;
public:
    GLFrame(QGLWidget *widget);

    void setState(const QVariantMap &state);
    void writeStateToMap(QVariantMap &states);
    QGLWidget *getGLWidget() {
        return glWidget;
    }
    void makeCurrent() {
        glWidget->makeCurrent();
    }
    void updateViewPort(int width, int height);
    void updateViewPort();
    void updateGL() {
        glWidget->updateGL();
    }
    GLfloat getZoomFactor() const {
        return zoomFactor;
    }
    float *getRotationMatrix() {
        return rotMatrix.data();
    }
    void rotateCamera(const Vector3D &rotAxis, float rotAngle);

    void setCameraClip(float clipNear, float clipFar);

    const Vector3D getCameraPosition() const;
    void setCameraPosition(const Vector3D &v);
    void setCameraPosition(float x, float y, float z);

    void performZoom(float delta);
    void performShift(float deltaX, float deltaY);

private:
    QGLWidget *glWidget;
    Matrix44 rotMatrix;
    float cameraClipNear, cameraClipFar;

    GLfloat zoomFactor;
    Vector3D cameraPosition;
};

class GLFrameManager {
    QMap<QGLWidget *, GLFrame *> widgetFrameMap;
    bool syncLock;

public:
    GLFrameManager()
        : syncLock(false) {
    }
    ~GLFrameManager();
    bool getSyncLock() const {
        return syncLock;
    }
    void setSyncLock(bool lockOn, QGLWidget *syncWidget);
    void addGLFrame(GLFrame *frame);
    GLFrame *getGLWidgetFrame(QGLWidget *widget);
    void removeGLWidgetFrame(QGLWidget *widget);
    void clear();
    QList<GLFrame *> getGLFrames();
    QList<GLFrame *> getActiveGLFrameList(GLFrame *currentFrame, bool syncModeOn);
};

}    // namespace U2

#endif    // _U2_GL_FRAME_MANAGER_H_
